Digest for sci.electronics.repair@googlegroups.com - 25 updates in 4 topics

Jolly Roger <jollyroger@pobox.com>: Jan 09 06:06PM

>> warning:
 
>> <https://stackoverflow.com/q/11883404/6540130>
 
> Well yes of course the CPU gets throttled to prevent overheating.
 
Throttling happens on all smartphones for various reasons, but the point
is Android does indeed throttle in certain situations as well. And those
situations aren't clearly documented for Android from what I can see.
 
> Apple is throttling because the batteries seem to age in a way that
> makes them incapable of powering the device properly at full speed and
> the device then crashes and unexpectedly reboots or locks up.
 
All batteries degrade over time, and there has been zero evidence that
there is a widespread issue with Apple device battery defects across all
models of their devices. Also, Apple devices aren't "crashing",
"unexpectedly rebooting", or "locking up" due to dying batteries - those
are not symptoms of the problem. The symptom of the problem is the
device spontaneously shuts down in the middle of whatever you are doing
because performance was allowed to spike to a point where the current
draw was more than the battery in its deteriorated condition could
handle. If that happens to be during a critical moment during a 911
call, you're fucked. Nobody wants their smartphone to spontaneously shut
down. So Apple added a feature in iOS 10 that monitored battery health,
detected when batteries could no longer provide needed current, and
reduced *peak* *spikes* in performance from happening, which has the
natural effect of preventing unwanted shutdowns and extends runtime.
And since only peak spikes are prevented, most apps continue to run at
full speed. Extended runtime on a dying battery is something all of us
want out of our devices (well, those of us without a trollish agenda,
that is).
 
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JR
"pfjw@aol.com" <pfjw@aol.com>: Jan 09 10:12AM -0800

a) Jimmy Neutron is not interested in facts, discussion, or conversation.
b) This thread will not die until Jimmy Neutron and its acolytes are ignored.
c) You are preaching to the converted on the one hand.
d) You are dealing with invincible ignorance on the other hand.
e) You will make no converts and change no minds on the gripping hand.
 
Please let this thread die. Please do not support the troll. And, please, let's endeavor to kill the troll the next time it inevitably shows itself.
 
Peter Wieck
Melrose Park, PA
Jolly Roger <jollyroger@pobox.com>: Jan 09 06:18PM


> That's not true. Did you read the Harvard Study which, admittedly, was a
> second or even third-order effect - but still - plenty of people noticed
> the slowdown - and plenty noticed the phones just shutting off also.
 
That "study", which basically amounted to a Harvard student doing an
informal Google Trends search for "iPhone slow" and correlating it with
iOS release dates, has been long debunked:
 
Sendhi Mullainathan (the author of the "study") said himself:
 
"Data on search frequency would not allow us to infer intent. No matter
how suggestive, this data alone doesn't allow you to determine
conclusively whether my phone is actually slower and, if so, why."
 
<https://thenextweb.com/apple/2017/10/07/study-apple-isnt-slowing-down-your-old-iphone/>
 
Another troll fail, brought to you by "Harry".
 
> When Apple *secretly*
 
FALSE. It was mentioned in the iOS 10.2.1 release notes as anyone with a
web browser and half a brain cell can plainly see:
 
"iOS 10.2.1 includes bug fixes and improves the security of your iPhone
or iPad. It also improves power management during peak workloads to
avoid unexpected shutdowns on iPhone."
 
<https://support.apple.com/kb/DL1893>
 
There's nothing "secret" about this.
 
>, *permanently*,
 
FALSE. The feature activates only on devices whose batteries can no
longer supply nominal current and only during *peak* resource
consumption, which means most apps are unaffected since most do not
cause peak spikes in performance. And replacing the dying battery with a
new one returns those *peak* spikes back to 100% performance. Nothing
"permanent" about it.
 
> and *drastically* cuts CPU performance after only a year of use,
 
FALSE. The feature only activates when apps cause *peak* spikes in
performance, which doesn't apply to the vast majority of apps, and only
takes effect on devices whose batteries are at the end of their lifespan
and cannot provide the needed current without prematurely shutting off
the device, which extends the runtime of devices with dying batteries -
that's something most people want. Hardly "drastic".
 
> why should Apple apologize for that.
 
You should apologize for all of your blatant, trollish lies.
 
> Hence, an iPhone X is really, after a year, an iPhone V (1/2 X) in terms of
> CPU performance.
 
Another lie. Troll, troll, troll your boat...
 
--
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JR
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Jan 09 06:49PM

On 9 Jan 2018 18:06:36 GMT, Jolly Roger wrote:
 
>> Well yes of course the CPU gets throttled to prevent overheating.
 
> Throttling happens on all smartphones for various reasons, but the point
> is Android does indeed throttle in certain situations as well.
 
Despite the Apple Apologists incessant fabricated claisms always attempting to imply that everyone *secretly*, *permanently*, and *drastically* throttles CPUs (to less than half the original speeds!) after only a year or so of use, the facts say otherwise.
 
Android Phones Do Not Slow Down Due to Old Batteries: Samsung, LG, Motorola, HTC
<https://www.bintooshoots.com/android-phones-do-not-slow-down-due-to-old-batteries-samsung-lg-motorola-htc/>
 
Apple Alone: Samsung, LG, Motorola, HTC All Deny Crippling Phones to Preserve Battery Life
<https://www.extremetech.com/mobile/261273-apple-alone-samsung-lte-motorola-htc-deny-crippling-phones-preserve-battery-life>
 
We don+IBk-t throttle performance on our Android phones like Apple, say HTC and Motorola
<https://www.androidauthority.com/htc-motorola-iphone-throttle-cpu-performance-android-826193/>
 
HTC & Motorola don't follow Apple's idea of slowing down CPU performance
<https://phandroid.com/2017/12/28/htc-motorola-cpu-throttling-response/>
 
HTC and Motorola say they don't slow down phones with old batteries like Apple does
<https://www.phonedog.com/2017/12/28/htc-motorola-dont-slow-down-phones-old-batteries-apple>
 
Not us! Android makers say they never slow phones over battery problems
<https://www.digitaltrends.com/mobile/android-cpu-throttle-battery-news/>
 
Samsung and LG also confirm they do not slow down phones with older batteries
<https://www.phonearena.com/news/Samsung-and-LG-also-confirm-they-do-not-slow-down-phones-with-older-batteries_id101140>
 
Samsung, LG, Motorola, HTC Confirm They Do Not Slow Down Older Devices
<http://www.bighugenews.com/post/Samsung,-LG,-Motorola,-HTC-confirm-they-do-not-slow-down-older-devices/>
 
No, Samsung and LG don+IBk-t throttle their devices like Apple
<https://www.dailydot.com/debug/android-slow-down-phones/>
 
Samsung And LG Take A Dig At Apple, Claim That They Don+IBk-t Slow Down Their Phones With Older Batteries
<http://naturalmakeuptutorialforbeginners.tk/news/Samsung-and-LG-Take-A-Dig-At-Apple,-Claim-That-They-Don%E2%80%99t-Slow-Down-Their-Phones-With-Older-Batteries/>
 
We don+IBk-t throttle performance on our Android phones like Apple, say HTC and Motorola
<https://www.androidauthority.com/htc-motorola-iphone-throttle-cpu-performance-android-826193/>
 
HTC and Motorola say they don+IBk-t slow old phones like Apple does
<https://www.theverge.com/circuitbreaker/2017/12/28/16825288/htc-motorola-dont-slow-processor-speeds-old-batteries-apple>
 
HTC & Motorola say they don't throttle older phones like Apple does as they age
<https://androidandme.com/2017/12/news/htc-and-motorola-say-they-dont-throttle-older-phones-as-batteries-age/>
 
Samsung, LG, HTC & Motorola don+IBk-t slow old phones like Apple does
<https://www.androidos.in/2017/12/android-phones-cpu-throttling/>
 
Joining other Android makers, Samsung & LG claim to not throttle CPUs as batteries age
<https://9to5google.com/2017/12/29/lg-samsung-not-throttling-cpu-battery-apple/>
 
https://www.gadgetsnow.com/tech-news/apple-battery-controversy-this-is-what-samsung-lg-motorola-and-htc-have-to-say-to-their-users/articleshow/62297075.cms
<https://www.gadgetsnow.com/tech-news/apple-battery-controversy-this-is-what-samsung-lg-motorola-and-htc-have-to-say-to-their-users/articleshow/62297075.cms>
 
HTC and Motorola don+IBk-t throttle performance like Apple does
<http://pocketnow.com/2017/12/28/htc-and-motorola-throttling-policies-apple>
 
Motorola and HTC Confirm They Don+IBk-t Throttle Older Devices
<https://www.xda-developers.com/motorola-htc-dont-throttle-older-devices/>
 
What's amazing is that the Apple Apologists deny what nobody else denies,
which is that Apple stands alone in what they did to *secretly*, *permanently*,
and *drastically* throttle iPhone performance after about a year of use.
 
And Apple is on record saying they'll do the same to the iPhone 8 & iPhone X
(which makes the iPhone 8 about 1/2 an iPhone 8, or an iPhone IV, and the
iPhone X about an iPhone V, so you may as well halve any benchmark you ever
see on an iPhone moving forward because it will be half the reported
performance after only about a year of use if they follow what their
predecessors did.
 
These are all straight facts.
sms <scharf.steven@geemail.com>: Jan 09 11:38AM -0800

On 1/9/2018 10:49 AM, Harry Newton wrote:
 
> Joining other Android makers, Samsung & LG claim to not throttle CPUs as batteries age
> <https://9to5google.com/2017/12/29/lg-samsung-not-throttling-cpu-battery-apple/>
 
Android devices (at least some of them) do offer a "battery saver"
option. On one phone I have, it can be set to activate when the battery
reaches 15% charge remaining, or you can keep it on all the time. It's a
very noticeable performance hit. But Android devices don't throttle
based on the age of the battery.
 
I like the idea of a device monitoring its battery health and when the
battery loses a certain level of capacity to advise the user that
battery replacement is a good idea, plus give the option of a trade-off
of performance versus time between charging. Transparency is always valued.
 
Tesla's plan is to repurpose car batteries, that are no longer holding
enough charge for use in a car, into storage systems where energy
density is less important. But in California, the last thing you want to
do is to use your solar panels to charge storage batteries--you want to
sell as much peak value KWH back to the utility as possible, and if you
have a battery-back-up system you want to charge it with low-cost
off-peak KWH.
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Jan 09 07:52PM

On 9 Jan 2018 18:18:45 GMT, Jolly Roger wrote:
 
> There's nothing "secret" about this.
 
Did you happen to notice an Apple Apology?
 
Do you think they apologized for nothing?
 
Did you happen to notice all the lawsuits?
 
Do you think they allege Apple did nothing wrong?
 
Did you happen to notice that *all* the Android manufacturers said they'd
never do to their customers what Apple did to you?
 
Or are you blind to facts?
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Jan 09 08:11PM

On Tue, 9 Jan 2018 11:38:03 -0800, sms wrote:
 
> reaches 15% charge remaining, or you can keep it on all the time. It's a
> very noticeable performance hit. But Android devices don't throttle
> based on the age of the battery.
 
I completely agree with your statement, and I extend it to say that all
manufacturers take battery charge *level* into account - but that's
completely different from what Apple did.
 
The fact-hating Apple Apologists try to claim that all manufacturers do the
same thing, which is like saying all salesmen lie. I'm sure a lot of
salesmen lie, but some are truthful.
 
In this case, *all* the major Android manufacturers have been asked a very
pointed question - and they all openly publicly and flatly deny that they
did to their customers what Apple did to its customers.
 
So the real question - the *technical* question - is HOW does what Apple
did differ from what Android manufacturers do?
 
To me, that's a very important technical question to answer correctly.
 
> battery loses a certain level of capacity to advise the user that
> battery replacement is a good idea, plus give the option of a trade-off
> of performance versus time between charging. Transparency is always valued.
 
You can rest assured that I *love* debugging tools! As you probably are
aware, I use a plethora of Wi-Fi and Cellular signal strength apps, and I
agree with you that monitoring battery "health" would be nice.
 
What Apple calls "chemical aging" is what needs to be monitored I think, do
you agree?
 
NOTE: I took inorganic and organic chemistry and physics, so redox
reactions are part and parcel - but I haven't delved into what's
specifically different about what Apple did versus what the Android
manufacturers do.
 
Certainly the Android manufacturers didn't throttle the CPU like Apple did
(since they're all on record flatly stating as much).
 
Do you have a good handle on the precise differences?
 
> sell as much peak value KWH back to the utility as possible, and if you
> have a battery-back-up system you want to charge it with low-cost
> off-peak KWH.
 
I agree, since I pay something like $0.45 a kilowatthour peak (last week of
the month) price for electricity where the average in the USA is about a
quarter of that.
 
But why not just add *more* solar panels to charge storage batteries too?
 
Most solar panels don't fully run the home (they could, but it depends on
who is paying for the panels in the first place because they, effectively,
make that decision and most of the "rental" agencies just get you into the
lower tiers).
 
Solar aside, I think the most important fact to differentiate is what Apple
did versus what the Android manufacturers do, when we all know that the
Android manufacturers are all on record stating they'd never do to their
customers what Apple did to theirs.
nospam <nospam@nospam.invalid>: Jan 09 03:24PM -0500

In article <p335ms$fpl$1@dont-email.me>, sms
 
> But Android devices don't throttle
> based on the age of the battery.
 
some do. they just don't want to admit it.
 
others just shut down or refuse to charge:
 
<http://www.androidpolice.com/2017/04/14/google-may-sued-nexus-6p-early-
shutdown-bootloop-issues/>
We reported late last year that certain Huawei Nexus 6Ps were
suffering from the early shutdown problem, causing them to die with
as much as 60% battery still indicated. Now, law firm Chimicles &
Tikellis LLP is investigating the possibility of bringing a class
action lawsuit against Google on behalf of customers who have faced
this issue.
 
<https://forums.androidcentral.com/google-nexus-5/630741-nexus-5-random-
shut-down-loss-battery.html>
Well since then the battery isn't so good, and whenever I use heavy
apps (primarily when i try to multitask between them) the phone will
black out and will turn back on with a chunk of battery missing or it
used to be dead.
...
So, the phone shut off and i have a pic of the chart that does show a
sudden drop. This is pretty much a fact of a dendrite is growing and
not software? I wonder how much it would cost to fix this.
 
<https://www.androidauthority.com/samsung-galaxy-note-8-battery-problem-
dead-charge-825899/>
Some Galaxy Note 8 users reporting that their phones will not accept
charge.
"pfjw@aol.com" <pfjw@aol.com>: Jan 09 12:42PM -0800

To kill the Undead, they must have their brains destroyed. Otherwise, they infect others. Jimmy Neutron is well down that road.
Jolly Roger <jollyroger@pobox.com>: Jan 09 09:06PM


> the facts say otherwise.
 
> [list of blogger articles devoid of facts rightfully ignored]
 
> What's amazing is that the Apple Apologists
 
What's amazing is that you think repeating this broken-record phrase
helps your case *at* *all*. All it does is show your true bias as an
irrational Apple-hating troll.
 
> which is that Apple stands alone in what they did
 
If Apple stands alone in detecting batteries that can't supply require
voltage and reacting in the operating system by preventing spikes in
performance that would otherwise cause a premature and unexpected
shutdown, potentially at a critical time for the user, such as during a
911 call, then the rest of the industry needs to catch up.
 
> *secretly*
 
Already debunked. Apple announced the feature on their website and in
the iOS release notes.
 
> *permanently*
 
Already debunked. The throttling is dynamic and only trims the peak
spikes in power draw, and replacing the battery restores peak
performance to normal.

> and *drastically* throttle
 
Already debunked as well. The throttling is dynamic, not fixed, and is
dependant on app resource utilization, which for most apps is below peak
thresholds.
 
> after about a year of use.
 
Debunked as well. There is no evidence that Apple's batteries don't last
longer than 3-4 years, and a lot of evidence showing they do generally
last that long. All batteries degrade over time. That's a fact of life.
 
> And Apple is on record saying they'll do the same to the iPhone 8 &
> iPhone X
 
Owners of those devices will enjoy extended runtime when the battery
starts to die, while owners of Android devices will watch their devices
spontaneously shut down when the batteries start to die. I know whose
devices I'm buying.
 
> (which makes the iPhone 8 about 1/2 an iPhone 8, or an iPhone IV, and
> the iPhone X about an iPhone Vi
 
Nope because the throttling is dynamic and not fixed and doesn't affect
all apps, nor batteries that are healthy.
 
> so you may as well halve any benchmark you ever see on an iPhone
> moving forward because it will be half the reported performance after
> only about a year of use if they follow what their predecessors did.
 
Complete nonsense.
 
> These are all straight facts.
 
They are all lies, and repeating them doesn't make you look any less
foolish to rational thinking adults.
 
--
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JR
Jolly Roger <jollyroger@pobox.com>: Jan 10 12:28AM

>> based on the age of the battery.
 
> some do. they just don't want to admit it.
 
> others just shut down or refuse to charge:
 
User experience be damned. Good job, DROIDs... No thanks, I'll take Apple's
solution with extended runtime.
 
--
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I often ignore posts from Google. Use a real news client instead.
 
JR
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Jan 10 03:03AM

On 9 Jan 2018 21:06:03 GMT, Jolly Roger wrote:
 
> They are all lies,
 
Notice I provide references, and you never do.
 
I think you're just not used to something they teach kids in high school
called "the scientific method".
 
Since you're clearly not well educated, take a lesson from me, which is
that you can't call verified facts lies just because those facts shake the
very foundation of your belief system.
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Jan 10 03:08AM

On 10 Jan 2018 00:28:28 GMT, Jolly Roger wrote:
 
> No thanks, I'll take Apple's
> solution with extended runtime.
 
Everything Apple does, from the lack of testing of their products in the
real world (e.g., witness iOS 7.0.1 breaking Linux connectivity where Apple
merely said on their support site that the real world was "not
supported")...
 
To the lack of testing of their products (witness the iPhone 6 shutdowns
which even Apple admits blindsided them) because they never tested the
phone in a refrigerated environment...
 
To the lack of testing of their products (witness the Mac debacle where
root didn't have a password) ...
 
To the lack of testing of their products (witness they delivered ioS 10.x
with the broadcom fix in their very hands and yet they *still* touted their
release as a "security update", all the while knowing full well that they
would be *destroying* that release in only 10 days - after millions of
people uploaded it where Apple had to practically beg everyone to delete it
ASAP even though they had the very fix in hand when they released it!)....
 
Everything Apple does, from the lack of testing of their products, to the
fact they *secretly*, *permanently*, and *drastically* throttled CPUs (to
less than half the claimed CPU speeds) after about a year of use ... shakes
the very foundation of your belief system.
Jolly Roger <jollyroger@pobox.com>: Jan 10 03:39AM

>> solution with extended runtime.
 
> Everything Apple does ... shakes
> the very foundation of your belief system.
 
Projection.
 
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JR
Jolly Roger <jollyroger@pobox.com>: Jan 10 03:39AM

> On 9 Jan 2018 21:06:03 GMT, Jolly Roger wrote:
 
>> They are all lies,
 
> Notice I provide references
 
References to fluff opinion pieces aren't "facts", dimwit troll.
 
--
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I often ignore posts from Google. Use a real news client instead.
 
JR
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Jan 10 04:34AM

On 10 Jan 2018 03:39:56 GMT, Jolly Roger wrote:
 
>> Everything Apple does ... shakes
>> the very foundation of your belief system.
 
> Projection.
 
I've studied you half-dozen Apple Apologists, and another half dozen
gullibles, where you're not at all like normal prescient adults.
 
I think you hate facts because these facts shake the utter foundation of
your belief system.
 
So, to maintain your belief system, you deny the facts, even to yourself.
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Jan 10 04:39AM

On 10 Jan 2018 03:39:55 GMT, Jolly Roger wrote:
 
> References to fluff opinion pieces aren't "facts", dimwit troll.
 
What is interesting is that almost every news provider asked each
manufacturer for a statement, and each Android manufacturer supplied a
definitive statement.
 
Those definitive statements were widely reported in the news, and *none*
disagree with each other.
 
You Apple Apologists are the *only* ones disagreeing with these facts.
Why?
 
I posit that you hate facts that shake your fundamental belief system.
 
In addition, I posit that you're not well educated, such that you tend to
vastly overly rely on your fundamental belief system rather than facts
which don't support your fundamental belief system.
 
Who are the Apple Apologists?
*Jolly Roger, Lewis, nospam, BKonRamp, Savageduck, Hemidactylus, etc.*
 
It's why you Apple Apologists act the way you do - which is sad - because
if you disappeared - the quality of the technical information in this
newsgroup would go up by a few orders of magnitude and the sharing of
factual technical information would improve exponentially.
Jolly Roger <jollyroger@pobox.com>: Jan 10 04:52AM

>>> system.
 
>> Projection.
 
> I've studied
 
You've spent hours upon hours every day trolling a newsgroup for
products you dislike and attacking complete strangers because everything
Apple does shakes the very foundation of your belief system. You're a
sad old fart whose only "joy" in life is disrupting otherwise peaceful
newsgroups. Pathetic old man.
 
--
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I often ignore posts from Google. Use a real news client instead.
 
JR
Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>: Jan 09 06:16PM -0500

On 01/08/2018 11:26 PM, bitrex wrote:
> except for the small detail that it doesn't work. Like extracting audio
> from ancient times off the decorative grooves cut into clay pots while
> spun on a wheel
 
There are a lot of ways to skin that particular cat, and normal
incidence isn't required. Oblique incidence and a remote quad-cell
photodiode in another nearby building is perfectly doable. The transmit
laser would have a fast 2D scanner, and a separate data link would allow
closing a feedback loop to keep the reflected beam centred on the quad
cell. What the sound quality would be like, I don't know.
 
A fast, fine raster scan would allow lock acquisition in a few seconds.
 
Adaptive optics is used for much harder jobs than that, every day.
 
Cheers
 
Phil Hobbs
 
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
 
http://electrooptical.net
http://hobbs-eo.com
The Real Bev <bashley101@gmail.com>: Jan 09 11:22AM -0800

> IMO
 
Unclear. I've bought them, as well as reading glasses, and have been
happy. Just hold them at arm's length and move them around to make sure
that there are no waves in the lenses.
 
 
--
Cheers, Bev
"I won't allow the half of Americans who pay no taxes to bear the burden
of the other half who aren't paying their fair share." -- Guess Who
"pfjw@aol.com" <pfjw@aol.com>: Jan 09 11:29AM -0800

> IMO
 
You get only one set of eyes.
The point of sunglasses is to stop UV (A&B) - which causes cataracts amongst other issues. Whatever may be written on a $1 pair of glasses, unless you can verify that they will block UV, run, don't walk away!
 
Peter Wieck
Melroes Park, PA
The Real Bev <bashley101@gmail.com>: Jan 09 12:17PM -0800

>> IMO
 
> You get only one set of eyes.
> The point of sunglasses is to stop UV (A&B) - which causes cataracts amongst other issues. Whatever may be written on a $1 pair of glasses, unless you can verify that they will block UV, run, don't walk away!
 
Plastic and glass block UV. The cheap ones are made by the same people
who make the expensive ones. Talk to your ophthalmologist, not somebody
who's trying to sell you $300 sunglasses.
 
--
Cheers, Bev
There is no such thing as a foolproof device
because fools are so ingenious.
"pfjw@aol.com" <pfjw@aol.com>: Jan 09 12:40PM -0800

As it happens, only coated plastics or glass will stop 100% of UVA and UVB radiation, not the plastic or glass itself.
 
https://www.thoughtco.com/does-glass-block-uv-light-608316
 
$300 sunglasses? Where would you get that idea? Perhaps $180 for graduated bifocal, high-index tinted lenses that are also scratch-resistant. Optically 'flat' lenses would be under $50. When one is -4, high-index is an issue. And optically flat lenses would be very nearly useless.
 
As stated, one gets only one set of eyes.
 
Peter Wieck
Melrose Park, PA
The Real Bev <bashley101@gmail.com>: Jan 09 02:46PM -0800

> As it happens, only coated plastics or glass will stop 100% of UVA
> and UVB radiation, not the plastic or glass itself.
 
> https://www.thoughtco.com/does-glass-block-uv-light-608316
 
Good to know. I was really annoyed that my prescription plastic
photogrey lenses didn't darken in the car because of insufficient UV --
in my defense, nobody worried about UVA back in the dark ages :-(
 
> scratch-resistant. Optically 'flat' lenses would be under $50. When
> one is -4, high-index is an issue. And optically flat lenses would be
> very nearly useless.
 
Opticians are amazingly good at convincing people that they need
designer frames if they don't want their glasses to fall apart at the
first sneeze. +3 with 2D of astigmatism is no fun either :-(
 
> As stated, one gets only one set of eyes.
 
And they should have been designed a lot better. Do dogs have as wide
a variety of distortions as humans do? Maybe the ones that did just
died before they reproduced...
 
--
Cheers, Bev
"If you were trying to be offensive, you would have succeeded if I
hadn't realized you have no idea what you are talking about."
-- FernandoP
makolber@yahoo.com: Jan 09 08:45AM -0800

On Friday, December 15, 2017 at 11:20:10 AM UTC-5, John Robertson wrote:
> >>>>>> definitely down for the count. I haven't had a chance to open it
> >>>>>> up yet
> >>>>>> but hoping it's an easy fix...
 
bitrex,
did you get your kik going?
 
what was wrong?
 
m
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